Long-Term Clinical Course of Normal-Tension Glaucoma: 20 Years of Experience

Table 1

Baseline demographics and characteristics of study participants.

Characteristic
M : F (N)	32 (44.4%) : 40 (55.6%)
Age (years)	58.4 ± 12.4
Mean follow-up period (years)	21.2 ± 1.1
CCT (mmHg)	535.4 ± 13.2
Mean baseline IOP (mmHg)	16.6 ± 3.1
Mean IOP (mmHg)	11.9 ± 2.2
Mean reduction rate of IOP (%)	28.3%
Baseline MD of visual field (dB)	−3.59 ± 2.21
MD slope (dB/year)	−0.28 ± 0.24
OPP	52.1 ± 5.9
Nocturnal hypotension (systolic/diastolic) (%)	7.6 ± 4.5/8.5 ± 5.9
wSD	14.5 ± 2.2

Expressed as the mean ± SD; CCT: central corneal thickness; IOP: intraocular pressure; MD: mean deviation; OPP: ocular perfusion pressure; wSD: weighted standard deviation.